adds comment show view

spec/features/comments/debates_spec.rb

@@ -20,6 +20,21 @@ feature 'Commenting debates' do
     end
   end
 
+  scenario 'Show' do
+    parent_comment = create(:comment, commentable: debate)
+    first_child    = create(:comment, commentable: debate, parent: parent_comment)
+    second_child   = create(:comment, commentable: debate, parent: parent_comment)
+
+    visit comment_path(parent_comment)
+
+    expect(page).to have_css(".comment", count: 3)
+    expect(page).to have_content parent_comment.body
+    expect(page).to have_content first_child.body
+    expect(page).to have_content second_child.body
+
+    expect(page).to have_link "Go back to #{debate.title}", debate_path(debate)
+  end
+
   scenario 'Comment order' do
     c1 = create(:comment, :with_confidence_score, commentable: debate, cached_votes_up: 100, cached_votes_total: 120, created_at: Time.now - 2)
     c2 = create(:comment, :with_confidence_score, commentable: debate, cached_votes_up: 10, cached_votes_total: 12, created_at: Time.now - 1)
@@ -254,7 +269,7 @@ feature 'Commenting debates' do
 
     fill_in "comment-body-debate_#{debate.id}", with: 'Testing submit button!'
     click_button 'Publish comment'
-    
+
     # The button's text should now be "..."
     # This should be checked before the Ajax request is finished
     expect(page).to_not have_button 'Publish comment'